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US 2015/0056100 A1Published application
Device for testing vertical tubes in a chemical reactor
AssigneeExtundo Incorporated
InventorsClifford L. Johns, Daniel D. Sympson
Life of this patent
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Abstract
A device and method for measuring the back pressure in chemical reactor tubes using injector tubes that are calibrated to provide uniform measurements.
Claims3
A device for measuring back pressure in open-ended chemical reactor tubes, comprising:
- a rigid wand body having upper and lower ends and including a frame member at said lower end;
- a plurality of hollow tube bodies mounted on said frame member;
- a seal mounted on each of said hollow tube bodies for sealing between the hollow tube body and a chemical reactor tube;
- a plurality of paths for providing controlled gas flow through said plurality of hollow tube bodies;
- and
- a pressure sensor in fluid communication with at least one of said hollow tube bodies;
- wherein, when the hollow tube bodies are inserted into a plurality of chemical reactor tubes projecting downwardly from a plate, the wand is self-supporting and rests on the plate.
4 more elements
Means for calibrating a device for measuring back pressure in open-ended chemical reactor tubes, comprising the steps of:
- providing a device for measuring back pressure in open-ended chemical reactor tubes, including a frame member and a plurality of injector tubes mounted on the frame member with a spacing between the injector tubes;
- providing a test stand, comprising a frame member;
- a base supporting said frame member;
- and a plurality of calibration tubes mounted on the frame member, each of said calibration tubes having an open top and a closed bottom, with a precision orifice in the closed bottom to simulate the chemical reactor tubes to be tested;
- inserting the plurality of injector tubes into the respective calibration tubes;
- sealing between the injector tubes and the calibration tubes;
- sending gas through the injector tubes and taking a back pressure reading for each of the injector tubes;
- and
- generating correction factors for each injector tube to correct for variations in the back pressure readings.
6 more elements
Dependencies are inferred from the claim text.